单选题Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）AEnsure proper cylinder lube oil flowBOpen all air space drain cocksCOpen all indicator valvesDall of the above
单选题
Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）
A
Ensure proper cylinder lube oil flow
B
Open all air space drain cocks
C
Open all indicator valves
D
all of the above
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